You are attempting to radiometrically date a rock sample that you have found. You know that your sample contains 12.5mg of the Parent Isotope and 87.5mg of the Daughter Isotope. How many half lives has your rock sample gone through? If the half life of your Isotope is 4,500
years, how old is your sample?
Оа
1 half life
Db
2 half lives
uc
3 half lives
d
4,500 years old
9,000 years old
13,500 years old

Select the correct answer.look at this nineteenth-century illustration of london. which explanation best relates this illustration to changes in britain in the 1800s? a.factory workers in cities lost their livelihood because of the lack of housingb.industrialization narrowed the inccome gap between landowners and workers.c.the migration of workers from rural to urban areas resulted in overcrowded citiesd.the spread of railways allowed farmers to sell produce far from where it was grown.